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Finding the Fourth Proportional to 438,561.76, 605,215.28 and 237,357.76

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Solution

The fourth proportional to 438,561.76, 605,215.28 and 237,357.76 is: 327,553.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,561.76 : 605,215.28 = 237,357.76 : x
  2. Step 2: Convert to fraction form
    438,561.76/605,215.28 = 237,357.76/x
  3. Step 3: Cross multiply
    438,561.76x = 605,215.28 × 237,357.76
  4. Step 4: Simplify right side
    438,561.76x = 143,652,543,178.57
  5. Step 5: Solve for x
    x = 143,652,543,178.57/438,561.76
  6. Step 6: Final answer
    x = 327,553.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.